﻿#region Header
// ------------------------ Licence / Copyright ------------------------
// 
// ScrumTable for Scrum Meeting Support
// Copyright © HSR - Hochschule für Technik Rapperswil
// All Rights Reserved
// 
// Author:
//  Michael Gfeller Silvan Gehrig Patrick Boos
// 
// ---------------------------------------------------------------------
#endregion

#region Usings

using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;

#endregion

namespace ScrumTable.UI.View.Converter
{

      /// <summary>
    /// convers a visbility to it inverse
    /// Hidden -> Visible
    /// Visbile -> Hidden
    /// Collapse -> Visible
    /// </summary>
    [ValueConversion(typeof(Visibility), typeof(Visibility))]
    public class ConverterInvertVisibility : IValueConverter
    {



        #region Methods
        //--------------------------------------------------------------------
        // Methods
        //--------------------------------------------------------------------
        /// <summary>
        /// object -> effect
        /// </summary>
        /// <param name="value">The value produced by the binding source.</param>
        /// <param name="targetType">The type of the binding target property.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">The culture to use in the converter.</param>
        /// <returns>
        /// A converted value. If the method returns null, the valid null value is used.
        /// </returns>
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {

            if (value is Visibility)
            {
                Visibility visibility = (Visibility)value;
                return visibility == Visibility.Hidden || visibility == Visibility.Collapsed
                           ? Visibility.Visible
                           : Visibility.Hidden;
            }
            return null;
        }

        /// <summary>
        /// Not supported. Throws NotSupportedException.
        /// </summary>
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotSupportedException();
        } 

        #endregion
    }
}
